CN213988571U

CN213988571U - Voltage transformer with mechanical locking structure

Info

Publication number: CN213988571U
Application number: CN202022647983.1U
Authority: CN
Inventors: 曾祥顺; 王传龙; 王卫东; 黄小军
Original assignee: HENGYANG HUARUI ELECTRIC CO LTD
Current assignee: HENGYANG HUARUI ELECTRIC CO LTD
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-08-17
Anticipated expiration: 2030-11-16

Abstract

The utility model relates to the technical field of electric power engineering, in particular to a voltage transformer with a mechanical locking structure, which comprises an insulating shell, wherein the left end of the insulating shell is provided with a junction box, the bottom end of the insulating shell is symmetrically provided with a first connecting plate, the front end and the rear end of each first connecting plate are symmetrically provided with a fixed bolt, the left end and the right end of a main coil are symmetrically provided with a brake support, the top end of the main coil is symmetrically provided with a fixed plate, the outer side of each fixed plate is symmetrically provided with an electromagnetic coil, the upper region of each second cavity is provided with a sealing plate, the inner top wall of the insulating shell is symmetrically provided with an electromagnetic controller, the inner top wall of the insulating shell is symmetrically provided with a third connecting plate, the bottom end of each third connecting plate is provided with a brake knife through a second swivel ring, the left side wall and the right side wall of the insulating shell are provided with springs, and one end of each spring is provided with a second connecting plate, thereby realizing better cooling effect, the insulating effect is ideal, and the arc extinction effect is better.

Description

Voltage transformer with mechanical locking structure

Technical Field

The utility model relates to an electric power engineering technical field specifically is a voltage transformer with mechanical latching structure.

Background

As is known, a voltage transformer is similar to a transformer and is an instrument for converting voltage, but the purpose of converting voltage of the transformer is to conveniently transmit electric energy, so that the capacity is very large, and usually kilovolt-ampere or mega volt-ampere is taken as a calculation unit, and the purpose of converting voltage of the voltage transformer is mainly used for supplying power to a measuring instrument and a relay protection device and measuring voltage, power and electric energy of a line, or used for protecting valuable equipment, a motor and a transformer in the line when the line fails, so that the capacity of the voltage transformer is very small, and generally only a few volt-amperes, a few tens of volt-amperes, and the maximum voltage does not exceed one thousand volt-amperes.

Chinese patent No. CN201920274788.3 discloses a voltage transformer with a mechanical locking structure, which finds that the cooling effect is not ideal, the insulation effect is poor, and the probability of generating an arc is high.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a cooling effect is better, and insulating effect ideal, the better voltage transformer who has mechanical shutting structure of arc extinction effect.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a voltage transformer with a mechanical locking structure comprises an insulating shell, wherein a junction box is arranged at the left end of the insulating shell, first connecting plates are symmetrically arranged at the bottom end of the insulating shell, fixing bolts are symmetrically arranged at the front end and the rear end of each first connecting plate, a grounding pile is connected to one of the fixing bolts through a ground wire, insulators are symmetrically arranged on the left side and the right side of the top end of the insulating shell, screw rods are arranged at the top ends of the insulators, fixing nuts are sleeved at the top ends of the screw rods, a first cavity is arranged in the insulating shell, a main coil is arranged on the inner bottom wall of the first cavity, brake supports are symmetrically arranged at the left end and the right end of the main coil, fixing plates are symmetrically arranged at the top end of the main coil, electromagnetic coils are symmetrically arranged on the outer sides of the fixing plates, and soft iron is arranged on the circumferential inner walls of the electromagnetic coils, one end of each soft iron, which is close to the fixed plate, is contacted with the outer wall of the fixed plate, the inner side wall of the insulating shell is provided with a coil controller, one coil controller is electrically connected with the main coil, the inside of each insulator is provided with a second chamber, the bottom end of each screw rod penetrates through each insulator and extends towards the inside of the insulator, the bottom end of each screw rod is electrically connected with the top end of the main coil, the circumferential outer wall of each screw rod is sleeved with a plurality of sub-coils, the upper area of each second chamber is provided with a sealing plate, the inner top wall of the insulating shell is symmetrically provided with an electromagnetic controller, the inner top wall of the insulating shell is symmetrically provided with a third connecting plate, the bottom end of each third connecting plate is provided with a switch blade through a second rotating ring, each switch blade is matched with a switch holder, the other end of each soft iron is fixedly connected with each switch blade, and the left side wall and the right side wall of the insulating shell are provided with springs, and one end of each spring is provided with a second connecting plate, the other end of each second connecting plate is rotatably connected with the knife switch through a first rotating ring, the bottom end of each insulator is communicated with the top end of the insulating shell, each electromagnetic controller is electrically connected with each electromagnetic coil, transformer oil is filled in the first cavity and the second cavity, and the horizontal plane of the transformer oil is positioned below the sealing plate.

Preferably, the left end of the insulating shell is provided with a junction box, and four corners of the left end of the junction box are fixedly connected with the left end of the insulating shell through fixing screws.

Preferably, the front area of the top end of the insulating shell is provided with an oil sealing nut, the bottom end of the oil sealing nut is provided with a sealing gasket, and the bottom end of the sealing gasket is in contact with the top end of the insulating shell.

Preferably, the front end of each brake support is provided with a clamping ring, and the rear end of the clamping ring passes through the brake support and is fixedly connected with the rear end of the brake support.

Preferably, a sealing ring is arranged in the middle of each sealing plate, and the circumferential inner wall of each sealing ring is sleeved on the circumferential outer wall of each screw rod.

Preferably, each first round hole has all been seted up on the top of insulator to be provided with the connecting pipe in each first round hole, the circumference inner wall of each connecting pipe all overlaps and is equipped with the sealing ring, each the bottom of sealing ring all is provided with the connecting rod, and the bottom of each connecting rod all is provided with the limiting plate, and the top of each sealing ring all is provided with the pressure valve, and the bottom of each pressure valve and the top contact of connecting pipe.

Preferably, each of the sub-coils is electrically connected to another one of the coil controllers.

(III) advantageous effects

Compared with the prior art, the utility model provides a voltage transformer with mechanical latching structure possesses following beneficial effect:

this voltage transformer with mechanical shutting structure, realize mechanical shutting through the control that each plug-in strip and each floodgate held in the palm, control solenoid coil through electromagnetic controller, the mechanical shutting control of being convenient for, the voltage control of this voltage transformer is increased through the cooperation of main coil and auxiliary coil, the insulating effect of this voltage transformer is increased through the cooperation of insulating casing and insulator, and the electric arc elimination effect of this voltage transformer of increase through transformer oil, cooling effect and insulating effect, cooperation through ground wire and ground connection stake, increase ground connection length, be convenient for this voltage transformer grounds, be convenient for this voltage transformer's series connection and parallelly connected through the cooperation between screw rod and the fixation nut, increase this voltage transformer's application range.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the cross section of the voltage transformer of the present invention;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1;

fig. 4 is an enlarged schematic structural view of the utility model at the point B in fig. 2;

fig. 5 is an enlarged schematic structural view of the present invention at C in fig. 2;

fig. 6 is an enlarged schematic structural view of the present invention at D in fig. 2.

In the figure: 1. an insulating case; 2. a first connecting plate; 3. a fixing bolt; 4. a junction box; 5. fixing screws; 6. A ground wire; 7. grounding piles; 8. an insulator; 9. fixing a nut; 10. a screw; 11. a main coil; 12. A coil controller; 13. transformer oil; 14. an electromagnetic controller; 15. a secondary coil; 16. an oil seal nut; 17. a gasket; 18. an electromagnetic coil; 19. a spring; 20. a second connecting plate; 21. a knife switch; 22. rotating a first ring; 23. soft iron; 24. rotating a second ring; 25. a third connecting plate; 26. a sealing plate; 27. a seal ring; 28. a connecting rod; 29. a seal ring; 30. a pressure valve; 31. a connecting pipe; 32. a limiting plate; 33. A fixing plate; 34. a brake support; 35. and a clamping ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-6, a voltage transformer with a mechanical locking structure includes an insulating case 1, a terminal box 4 is disposed at the left end of the insulating case 1, connection plates 2 are symmetrically disposed at the bottom end of the insulating case 1, fixing bolts 3 are symmetrically disposed at the front end and the rear end of each connection plate 2, a grounding pile 7 is connected to one of the fixing bolts 3 through a ground wire 6, insulators 8 are symmetrically disposed at the left side and the right side of the top end of the insulating case 1, a screw 10 is disposed at the top end of each insulator 8, a fixing nut 9 is sleeved at the top end of each screw 10, a first chamber is disposed inside the insulating case 1, a main coil 11 is disposed at the inner bottom wall of the first chamber, brake holders 34 are symmetrically disposed at the left end and the right end of the main coil 11, fixing plates 33 are symmetrically disposed at the top end of the main coil 11, and electromagnetic coils 18 are symmetrically disposed at the outer sides of the fixing plates 33, the inner wall of the circumference of each electromagnetic coil 18 is provided with soft iron 23, one end of each soft iron 23 close to the fixed plate 33 is contacted with the outer wall of the fixed plate 33, the inner side wall of the insulating shell 1 is provided with a coil controller 12, one coil controller 12 is electrically connected with the main coil 11, the inside of each insulator 8 is provided with a second chamber, the bottom end of each screw 10 penetrates through each insulator 8 and extends towards the inside of the insulator 8, the bottom end of each screw 10 is electrically connected with the top end of the main coil 11, the outer wall of the circumference of each screw 10 is sleeved with a plurality of secondary coils 15, the upper area of each second chamber is provided with a sealing plate 26, the inner top wall of the insulating shell 1 is symmetrically provided with electromagnetic controllers 14, the inner top wall of the insulating shell 1 is symmetrically provided with a connecting plate III 25, the bottom end of each connecting plate III 25 is provided with a knife 21 through a second swivel ring 24, and each knife 21 is matched with a knife holder 34, the other end of each soft iron 23 is fixedly connected with each knife switch 21, the left side wall and the right side wall of the insulating shell 1 are respectively provided with a spring 19, one end of each spring 19 is provided with a connecting plate two 20, the other end of each connecting plate two 20 is rotatably connected with the knife switch 21 through a rotating ring one 22, the bottom end of each insulator 8 is communicated with the top end of the insulating shell 1, each electromagnetic controller 14 is electrically connected with each electromagnetic coil 18, transformer oil is filled in the first cavity and the second cavity, the level of the transformer oil is positioned below the sealing plate 26, the voltage transformer with the mechanical locking structure realizes mechanical locking through the control of each knife switch 21 and each brake support 34, the electromagnetic coils 18 are controlled through the electromagnetic controller 14, the mechanical locking control is convenient, the voltage control of the voltage transformer is increased through the matching of the main coil 11 and the auxiliary coil 15, the insulation effect of the voltage transformer is increased through the matching of the insulating shell 1 and the insulator 8, and through the electric arc elimination effect of this voltage transformer's of increase of transformer oil, cooling effect and insulating effect, through the cooperation of ground wire 6 and ground connection stake 7, increase ground connection length, the voltage transformer of being convenient for carries out ground connection, and the cooperation between screw rod 10 and fixation nut 9 is convenient for this voltage transformer's series connection and parallelly connected, increases this voltage transformer's application range.

Further, a terminal box 4 is arranged at the left end of the insulating shell 1, four corners of the left end of the terminal box 4 are fixedly connected with the left end of the insulating shell 1 through fixing screws 5, so that the wiring of the voltage transformer is facilitated, an oil seal nut 16 is arranged in the front area of the top end of the insulating shell 1, a sealing gasket 17 is arranged at the bottom end of the oil seal nut 16, the bottom end of the sealing gasket 17 is contacted with the top end of the insulating shell 1, so that the transformer oil can be conveniently added into the insulating shell 1 and the insulator 8, a clamping ring 35 is arranged at the front end of each gate support 34, the rear end of the clamping ring 35 penetrates through the gate support 34 and is fixedly connected with the rear end of the gate support 34, so that the contact between the gate knife 21 and the gate support 34 is tighter, a sealing ring 27 is arranged in the middle of each sealing plate 26, and the circumferential inner wall of each sealing ring 27 is sleeved on the circumferential outer wall of each screw 10, so as to prevent the transformer oil, spill over through the top of insulator 8, first round hole has all been seted up on the top of each insulator 8, and be provided with connecting pipe 31 in each first round hole, the equal cover of circumference inner wall of each connecting pipe 31 is equipped with sealing ring 29, the bottom of each sealing ring 29 all is provided with connecting rod 28, and the bottom of each connecting rod 28 all is provided with limiting plate 32, the top of each sealing ring 29 all is provided with pressure valve 30, the bottom of each pressure valve 30 and the top contact of connecting pipe 31, prevent that the inside air of insulator 8 from leading to the explosion because of overheated inflation, each secondary coil 15 and wherein another coil controller 12 electric connection, the control of the secondary coil 15 of being convenient for.

To sum up, this voltage transformer with mechanical blocking structure, when using, at first plug into the cable through terminal box 4, and insulate through insulator 8 and insulating casing 1, insulate through transformer oil, arc extinction and heat dissipation, carry out the interpolation of transformer oil through oil blanket nut 16, and the cooperation between fixing nut 9 and screw rod 10, establish ties or connect in parallel a plurality of voltage transformer, fix this voltage transformer through connecting plate one 2, and through ground connection stake 7 and ground wire 6, ground connection, carry out the separation between floodgate support 34 and the plug 21 through spring 19 and connecting plate two 20, through the cooperation between sealing ring 29 and connecting pipe 31, be convenient for discharge expanded air, control main coil 11 and secondary coil 15 through coil controller 12.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a voltage transformer with mechanical latching structure, includes insulating casing (1), its characterized in that: the left end of the insulating shell (1) is provided with a junction box (4), the bottom end of the insulating shell (1) is symmetrically provided with first connecting plates (2), the front end and the rear end of each first connecting plate (2) are symmetrically provided with fixing bolts (3), one fixing bolt (3) is connected with a grounding pile (7) through a ground wire (6), the left side and the right side of the top end of the insulating shell (1) are symmetrically provided with insulators (8), the top end of each insulator (8) is provided with a screw rod (10), the top end of each screw rod (10) is sleeved with a fixing nut (9), a first chamber is arranged inside the insulating shell (1), the inner bottom wall of the first chamber is provided with a main coil (11), the left end and the right end of the main coil (11) are symmetrically provided with brake supports (34), and the top end of the main coil (11) is symmetrically provided with fixing plates (33), electromagnetic coils (18) are symmetrically arranged on the outer side of each fixed plate (33), soft irons (23) are arranged on the circumferential inner wall of each electromagnetic coil (18), one end, close to the fixed plate (33), of each soft iron (23) is in contact with the outer wall of the fixed plate (33), coil controllers (12) are arranged on the inner side wall of the insulating shell (1), one coil controller (12) is electrically connected with the main coil (11), a second cavity is arranged inside each insulator (8), the bottom end of each screw rod (10) penetrates through each insulator (8) and extends towards the inside of the insulator (8), the bottom end of each screw rod (10) is electrically connected with the top end of the main coil (11), a plurality of secondary coils (15) are sleeved on the circumferential outer wall of each screw rod (10), and a sealing plate (26) is arranged in the upper area of each second cavity, electromagnetic controllers (14) are symmetrically arranged on the inner top wall of the insulating shell (1), connecting plates III (25) are symmetrically arranged on the inner top wall of the insulating shell (1), the bottom end of each connecting plate III (25) is provided with a knife switch (21) through a second rotating ring (24), each knife switch (21) is matched with a knife switch support (34), the other end of each soft iron (23) is fixedly connected with each knife switch (21), the left side wall and the right side wall of the insulating shell (1) are provided with springs (19), one end of each spring (19) is provided with a second connecting plate (20), the other end of each connecting plate II (20) is rotatably connected with the knife switch (21) through a first rotating ring (22), the bottom end of each insulator (8) is communicated with the top end of the insulating shell (1), and each electromagnetic controller (14) is electrically connected with each electromagnetic coil (18), transformer oil (13) is filled in the first cavity and the second cavity, and the level of the transformer oil (13) is located below the sealing plate (26).

2. The voltage transformer with the mechanical locking structure as claimed in claim 1, wherein: the left end of the insulating shell (1) is provided with a junction box (4), and the four corners of the left end of the junction box (4) are fixedly connected with the left end of the insulating shell (1) through fixing screws (5).

3. The voltage transformer with the mechanical locking structure as claimed in claim 2, wherein: an oil seal nut (16) is arranged in the front area of the top end of the insulating shell (1), a sealing gasket (17) is arranged at the bottom end of the oil seal nut (16), and the bottom end of the sealing gasket (17) is in contact with the top end of the insulating shell (1).

4. A voltage transformer with a mechanical latching structure as claimed in claim 3, wherein: the front end of each brake support (34) is provided with a clamping ring (35), and the rear end of the clamping ring (35) penetrates through the brake support (34) and is fixedly connected with the rear end of the brake support (34).

5. The voltage transformer with the mechanical locking structure as claimed in claim 4, wherein: and a sealing ring (27) is arranged in the middle of each sealing plate (26), and the circumferential inner wall of each sealing ring (27) is sleeved on the circumferential outer wall of each screw rod (10).

6. The voltage transformer with the mechanical locking structure as claimed in claim 5, wherein: first round holes are formed in the top end of each insulator (8), connecting pipes (31) are arranged in each first round hole, sealing rings (29) are sleeved on the inner wall of the circumference of each connecting pipe (31), connecting rods (28) are arranged at the bottom ends of the sealing rings (29), limiting plates (32) are arranged at the bottom ends of the connecting rods (28), pressure valves (30) are arranged at the top ends of the sealing rings (29), and the bottom ends of the pressure valves (30) are in contact with the top ends of the connecting pipes (31).

7. The voltage transformer with the mechanical locking structure as claimed in claim 6, wherein: each secondary coil (15) is electrically connected with the other coil controller (12).